atanh
Calcule la tangente hyperbolique inverse de la colonne d'entrée. Prend en charge Spark Connect.
Pour la fonction Databricks SQL correspondante, consultez la fonctionatanh.
Syntaxe
Python
from pyspark.sql import functions as dbf
dbf.atanh(col=<col>)
parameter
parameter | Type | Description |
|---|---|---|
|
| colonne cible sur laquelle effectuer le compute. |
Renvoie
pyspark.sql.Column: la colonne pour les résultats calculés.
Exemples
Python
from pyspark.sql import functions as dbf
df = spark.createDataFrame([(-0.5,), (0.0,), (0.5,)], ["value"])
df.select("*", dbf.atanh(df.value)).show()
Output
+-----+-------------------+
|value| ATANH(value)|
+-----+-------------------+
| -0.5|-0.5493061443340...|
| 0.0| 0.0|
| 0.5| 0.5493061443340...|
+-----+-------------------+
Python
from pyspark.sql import functions as dbf
spark.sql("SELECT * FROM VALUES (-2), (2), (FLOAT('NAN')), (NULL) AS TAB(value)").select("*", dbf.atanh("value")).show()
Output
+-----+------------+
|value|ATANH(value)|
+-----+------------+
| -2.0| NaN|
| 2.0| NaN|
| NaN| NaN|
| NULL| NULL|
+-----+------------+